Koyta55 Koyta55

23-10-2020
Mathematics

contestada

What is the image of the point (-1,7)(−1,7) after a rotation of 90^{\circ}90∘counterclockwise about the origin?

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jimrgrant1 jimrgrant1

23-10-2020

Answer:

(- 7, - 1 )

Step-by-step explanation:

Under a counterclockwise rotation about the origin of 90°

a point (x, y ) → (- y, x ) , thus

(- 1, 7 ) → (- 7, - 1 )

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